98 UV PERSEI (USGU) Range: 11.0-20p Position: 02 10 08.26 +57 11 21.0 (2000, from .dat file) Magnitude: V=17.496 B-V=0.281 (in .dat file) ID RA (2000) DEC X Y N V ERR B-V ERR a) Comparison star sequence 1 02 10 13.4 +57 11 25 41 4 3 10.488 0.051 0.446 0.041 2 02 10 03.4 +57 11 52 -40 31 3 10.669 0.041 0.323 0.035 3 02 09 56.1 +57 13 59 -99 158 3 11.032 0.032 0.234 0.035 4 02 10 17.4 +57 17 01 74 340 2 12.348 0.006 0.494 0.008 5 02 10 10.2 +57 13 56 15 155 3 12.724 0.014 0.247 0.005 6 02 10 27.3 +57 14 18 154 177 3 12.980 0.009 0.452 0.002 7 02 10 11.0 +57 12 51 22 90 3 13.319 0.013 0.811 0.006 8 02 10 02.0 +57 11 11 -51 -10 3 13.659 0.022 0.308 0.011 9 02 09 58.3 +57 12 12 -81 51 3 14.118 0.014 0.565 0.003 10 02 09 44.6 +57 08 48 -193 -153 3 14.413 0.015 0.748 0.012 11 02 10 03.3 +57 11 26 -41 5 3 14.715 0.024 0.802 0.016 12 02 09 58.9 +57 09 46 -77 -95 3 14.908 0.011 0.375 0.016 13 02 10 05.0 +57 11 27 -27 6 3 15.279 0.027 0.914 0.010 14 02 09 59.7 +57 10 54 -70 -27 3 15.646 0.016 0.702 0.015 15 02 10 10.2 +57 10 45 15 -36 3 16.001 0.035 0.897 0.036 16 02 10 07.9 +57 11 13 -3 -8 3 16.269 0.006 1.166 0.027 17 02 10 08.1 +57 11 38 -2 17 3 17.183 0.050 1.112 0.029 b) Wide-colour extension for CCD calibration 02 10 25.5 +57 06 16 140 -305 3 13.731 0.006 0.261 0.008 02 09 55.0 +57 06 13 -109 -308 3 14.352 0.013 0.275 0.009 02 09 44.7 +57 12 46 -192 85 3 13.837 0.017 1.617 0.028 02 10 06.4 +57 13 57 -15 156 3 11.819 0.011 1.705 0.018 02 09 49.9 +57 13 44 -149 143 3 12.867 0.014 1.879 0.019 Notes: 1. Stars #1 and #2 are saturated, and their magnitudes and colours are inaccurate. They have reliable Tycho-2 magnitudes of V=10.05+/-0.03 and V=10.50+/-0.05 respectively. 2. Two other bright stars shown on the AAVSO chart were too bright to be measured by Henden. They do have semi-reliable Tycho-2 magnitudes. These are the AAVSO star 105 with a Tycho-2 magnitude of 10.29+/-0.05 and the AAVSO star 113 with a Tycho-2 magnitude of 10.77+/-0.08. 3. There is an AAVSO Preliminary (f) chart dated February 1996 that includes a PEP(V)sequence determined by R. Stanton. Additionally Howarth and Bailey (JBAA 90, 265), B.A. Skiff (vsnet 267, Oct 1995) and K.A. Misselt (PASP 1996, 108,146) measured some of these comparison stars. Only stars with a star number are included as part of this new sequence. Star Henden Skiff Howarth&Bailey Misselt AAVSO Tycho-2 V B-V V b-y V B-V V B-V V V B-V 1 10.488 0.446 10.089 0.337 10.58A 0.31 101 10.05 0.47 2 10.669 0.323 10.83B 0.11 103 10.50 0.16 105 10.29 1.65 3 11.032 0.234 10.946 0.113 11.72C-0.26 108 11.04 0.08 113 10.77 1.85 11.819 1.705 12.54D 1.35 11.820 1.735 120 12.656 0.567 13.13E 0.36 5 12.724 0.247 12.697 0.241 13.19F 0.21 12.772 0.302 126 7 13.319 0.811 13.75G 0.40 13.377 0.862 13.581 0.624 13.664 0.695 136 8 13.659 0.308 13.607 0.252 14.09H-0.06 13.739 0.355 136 9 14.118 0.565 14.47K-0.21 14.182 0.589 141 14.537 1.145 145 11 14.715 0.802 14.843 0.868 147 13 15.279 0.914 15.400 0.942 153 15 16.001 0.897 161 16 16.269 1.166 164 17 17.183 1.112 172 Bruce Sumner 30 November 2000 Revised 6 November 2001 Revised 4 March 2002